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<h1>Enviornmental variable functions</h1>
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The following functions allow you to manipulate environmental variables.
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<a href=../MAN/getenv.htm>getenv</a> Get the value of an environmental variable.
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<a href=../MAN/putenv.htm>putenv</a>
Change or add an environmental variable.
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<a href=../MAN/setenv.htm>setenv</a>
Change or add an environmental variable.
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<a href=../MAN/unsetenv.htm>unsetenv</a>
Remove an environmental variable.
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<a href=../EXAMPLES/printenv.c>printenv</a>
program.
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<address><a href="../../address.html">Martin Leslie</a> 
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